fix build on windows

meson.build

@@ -29,9 +29,16 @@ deps = [
   dependency('glfw3', include_type: 'system'),
   dependency('glm', include_type: 'system'),
   dependency('vulkan', include_type: 'system'),
-  cpp.find_library('imgui'),
 ]
 
+imgui_dep = dependency('imgui', required: false, include_type: 'system')
+
+if not imgui_dep.found()
+  imgui_dep = cpp.find_library('imgui', required: true)
+endif
+
+deps += imgui_dep
+
 executable(
   'graphics-test',
   sources: files('src/main.cpp'),

src/main.cpp

@@ -370,7 +370,7 @@ class VulkanApp {
       .Queue                       = mGraphicsQueue,
       .DescriptorPool              = mImGuiDescriptorPool.get(),
       .RenderPass                  = mRenderPass.get(),
-      .MinImageCount               = 1,
+      .MinImageCount               = MAX_FRAMES_IN_FLIGHT,
       .ImageCount                  = static_cast<uint32_t>(mSwapChainImages.size()),
       .MSAASamples                 = static_cast<VkSampleCountFlagBits>(mMsaaSamples),
       .PipelineCache               = VK_NULL_HANDLE,